---
product_id: 619711598
title: "Diesel/DEF Combo Locking Caps for 2023 Ford F250 F350 F450 - DIESEL ONLY"
brand: "bem auto"
price: "€ 5.43"
currency: EUR
in_stock: false
reviews_count: 8
url: https://www.desertcart.fi/products/619711598-diesel-def-combo-locking-caps-for-2023-ford-f250-f350
store_origin: FI
region: Finland
---

# Precision locking security Durable stainless steel components Fully machined Midwest craftsmanship Diesel/DEF Combo Locking Caps for 2023 Ford F250 F350 F450 - DIESEL ONLY

**Brand:** bem auto
**Price:** € 5.43
**Availability:** ❌ Out of Stock

## Summary

> 🔐 Lock in your truck’s power with precision-crafted security!

## Quick Answers

- **What is this?** Diesel/DEF Combo Locking Caps for 2023 Ford F250 F350 F450 - DIESEL ONLY by bem auto
- **How much does it cost?** € 5.43 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/619711598-diesel-def-combo-locking-caps-for-2023-ford-f250-f350)

## Best For

- bem auto enthusiasts

## Why This Product

- Trusted bem auto brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Premium Material Fusion:** Billet aluminum diesel cap and acetal DEF cap combine strength with corrosion resistance.
- • **Tailored for Powerstroke:** Specifically designed for 2023 Ford F250/F350/F450 diesel trucks with black-painted diesel pipes.
- • **Unmatched Security Locking:** Stainless steel locking parts ensure your diesel and DEF tanks stay safe from tampering.
- • **Midwest Machined Excellence:** Proudly crafted and assembled in the USA for superior quality and reliability.
- • **User-Friendly Stainless Steel Keys:** Durable keys with polypropylene handles for effortless, long-lasting use.

## Overview

The Diesel/DEF Combo Locking Caps by BEM Auto are precision-machined locking caps designed exclusively for 2023 Ford F250, F350, and F450 Powerstroke diesel trucks. Featuring billet aluminum and acetal construction with stainless steel locking components, these caps provide robust security and durability. Proudly made in the Midwest USA, they ensure a perfect fit for diesel pipes painted black inside, with stainless steel keys designed for ease of use. Note: Compatibility kits may be required for 2024 and 2025 models.

## Description

Locking diesel and DEF caps combo for 2023 Ford F250 F350 F450. Powerstroke only! Some customers report difficulty operating the caps. Please call customer service in case this happens to you. This set only works for Powerstroke trucks with diesel pipes as pictured (painted black inside). If your 2023 model Powerstroke diesel truck has a bare stainless steel diesel filler pipe, you will need to order the set we sell for the 2021-22 model year Powerstroke trucks. CHECK CAREFULLY!

## Features

- Caps are fully machined and assembled in the Midwest USA
- Might not work without compatibility kit on 2024 and 2025s. Call customer service for help.
- DEF cap is fully machined acetal, with stainless steel locking components.
- Keys are stainless steel with polypropylene handle.
- Only compatible with Powerstroke trucks with diesel pipes as pictured (painted black inside).
- Diesel cap is billet aluminum, with stainless steel locking components.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | BEM Auto |
| Material | Buna N, Acetal, Stainless Steel, Polypropylene, Aluminum |
| Exterior Finish | Aluminun, Acetal, Stainless Steel |
| Item dimensions L x W x H | 2.5 x 6 x 2.5 inches |
| Vehicle Service Type | Truck |
| Style | Modern |
| Item Weight | 12 Ounces |
| Closure Type | Locking |
| Manufacturer | BEM AUTO |
| Model | Ford |
| Item Weight | 12 ounces |
| Product Dimensions | 2.5 x 6 x 2.5 inches |
| Item model number | BLS-BF1 |
| Manufacturer Part Number | BLS-BF1 |

## Product Details

- **Brand:** BEM Auto
- **Material:** Buna N, Acetal, Stainless Steel, Polypropylene, Aluminum
- **Exterior Finish:** Aluminun, Acetal, Stainless Steel
- **Item dimensions L x W x H:** 2.5 x 6 x 2.5 inches
- **Vehicle Service Type:** Truck

## Images

![Diesel/DEF Combo Locking Caps for 2023 Ford F250 F350 F450 - DIESEL ONLY - Image 1](https://m.media-amazon.com/images/I/51yiwLqzp9L.jpg)
![Diesel/DEF Combo Locking Caps for 2023 Ford F250 F350 F450 - DIESEL ONLY - Image 2](https://m.media-amazon.com/images/I/51RrblclkAL.jpg)
![Diesel/DEF Combo Locking Caps for 2023 Ford F250 F350 F450 - DIESEL ONLY - Image 3](https://m.media-amazon.com/images/I/716ytT9Uc2L.jpg)
![Diesel/DEF Combo Locking Caps for 2023 Ford F250 F350 F450 - DIESEL ONLY - Image 4](https://m.media-amazon.com/images/I/81fYf1gGiZL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Toughest Locking Fuel Caps known to man!
*by C***L on May 2, 2024*

I ordered these on the recommendation from Powerstroke Tech Talk on YouTube. I want to know that my truck is safe from someone stealing or contaminating my diesel. These are the highest quality caps available. You get what you pay for and these are totally worth the money. It’s nice to know that no one except me has access to my fuel now.

### ⭐ Does not lock on MY 2024
*by J***Y on August 11, 2024*

Material is A+. Def cap locks fine. The diesel cap doesn’t. Did receive slimmer gasket. Still not thin enough for the cap to fully seat in the neck filler to lock. I’ve read some 24s work, which I don’t get it. Wouldn’t think ford switch something in the later 24 model. Going to a metal machine company to fix the problem. Company did communicate good, but towards the end, ghosted me.*Update* received cap back from machinist. Cut a grove into the cap so that the large gasket can sit inside the cap. Cap turned all the way on and locked perfectly, with gasket sealing around neck filler.

### ⭐⭐⭐⭐⭐ High Quality and Security
*by M***S on May 7, 2024*

Order placed and received in a very timely manner. Product fit as described (even better!) and constructed of quality materials. Could not be more pleased. Now feel little more secure when leaving truck at trail heads and such for a couple days. I have a '24 F-450 with the black painted fill tube so solid fit. Highly recommend.

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**Shop now:** [https://www.desertcart.fi/products/619711598-diesel-def-combo-locking-caps-for-2023-ford-f250-f350](https://www.desertcart.fi/products/619711598-diesel-def-combo-locking-caps-for-2023-ford-f250-f350)

---

*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-02-05*